If you loved HAIKYU!! The Dumpster Battle, try Haikyu!! the Movie: The Winner and the Loser
A bridge between a film you've already seen and one most people haven't. Haikyu!! the Movie: The Winner and the Loser has roughly 7.3× fewer votes than HAIKYU!! The Dumpster Battle — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

HAIKYU!! The Dumpster Battle

Haikyu!! the Movie: The Winner and the Loser
What they share
Both films are directed by Susumu Mitsunaka, and they both carry the cozy, foreign gem, playful, uplifting mood tags, and they sit in Animation territory. If that's the register that drew you to HAIKYU!! The Dumpster Battle, the second film will land in a comparable space — through a different lens.
What Haikyu!! the Movie: The Winner and the Loser is
Haikyu!! without the volleyball matches. It's the story of Shoyo Hinata joining Karasuno High's volleyball team and their journey to the Inter-High Tournament. A reminder of how well sports anime can execute underdog narratives.